JPH07108386A - Spot welding electrode - Google Patents

Spot welding electrode

Info

Publication number
JPH07108386A
JPH07108386A JP14554893A JP14554893A JPH07108386A JP H07108386 A JPH07108386 A JP H07108386A JP 14554893 A JP14554893 A JP 14554893A JP 14554893 A JP14554893 A JP 14554893A JP H07108386 A JPH07108386 A JP H07108386A
Authority
JP
Japan
Prior art keywords
tip
cap
shank
shaped
projecting part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP14554893A
Other languages
Japanese (ja)
Other versions
JP2665578B2 (en
Inventor
Toshiaki Shimada
利晃 島田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP5145548A priority Critical patent/JP2665578B2/en
Priority to US08/234,356 priority patent/US5473135A/en
Publication of JPH07108386A publication Critical patent/JPH07108386A/en
Application granted granted Critical
Publication of JP2665578B2 publication Critical patent/JP2665578B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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  • Resistance Welding (AREA)

Abstract

PURPOSE:To prevent leakage of cooling water at the time of exchanging a tip and to improve fixation of the tip by providing a projecting part on the tip of a shank, fixing the cap-shaped tip attachably and detachably on the outside thereof and providing a small groove on the tip inside. CONSTITUTION:A copper member with a projecting part is welded 25 to the tip of the hollow bar-shaped shank 20 to form the projecting part 22. When a recessed part 32 of the cap-shaped tip 30 is fixed attachably and detachably on the projecting part 22, a gentle taper 21 is provided on the projecting part 22, a lubricant 23 is interposed and the recessed part 32 is press-fitted and stuck to the projecting part 22. The electrically conductive lubricant is desirable as the lubricant 23. In exchanging the cap-shaped tip 30, since a waterway in a hollow part 24 of the shank 20 is not communicated with the air, the water leakage is not caused and when the cap-shaped tip 30 is fixed on the recessed part 32, since fluid materials in the space between the tip 30 and the part 32 leak to the outside from the small groove 31, fixation of the tip is improved.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はスポット溶接の電極に関
するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to spot welding electrodes.

【0002】[0002]

【従来の技術】スポット溶接の電極には、図4に示す如
く、冷却水路用の中心軸線方向貫通孔52付きのシャン
ク51とその先端に嵌合固定したチップ53より構成さ
れている。
2. Description of the Related Art An electrode for spot welding is composed of a shank 51 having a through hole 52 in the direction of the central axis for a cooling water channel and a tip 53 fitted and fixed to its tip, as shown in FIG.

【0003】チップ53は消耗品のため度々新品と交換
しなければならない。チップ53を交換するときには水
路を遮断して行うが水洩れが生じるのを避けることが出
来なかった。
Since the chip 53 is a consumable item, it must be frequently replaced with a new one. When exchanging the tip 53, the water channel was blocked, but water leakage could not be avoided.

【0004】[0004]

【発明が解決しようとする課題】チップ交換時に水洩れ
が発生しないスポット溶接用電極棒を提供しようとする
ものである。
SUMMARY OF THE INVENTION It is an object of the present invention to provide an electrode rod for spot welding in which water leakage does not occur at the time of tip replacement.

【0005】[0005]

【課題を解決するための手段】図1乃至図3を参考にし
て説明する。この発明に係るスポット溶接用電極は、シ
ャンク20先端に凸部22を設け、該凸部22外側に帽
状チップ30の凹部32を装脱可能に固定すると共に該
凹部内面上縁から凹部底面近傍に達する小溝31を設け
てある。
A means for solving the problems will be described with reference to FIGS. The electrode for spot welding according to the present invention is provided with the convex portion 22 at the tip of the shank 20, the concave portion 32 of the cap-shaped tip 30 is detachably fixed to the outer side of the convex portion 22, and the inner edge of the concave portion is close to the concave portion bottom surface. There is provided a small groove 31 reaching to.

【0006】[0006]

【作用】チップを交換する際、水路が開放されないので
水洩れが発生しない。
When the tip is replaced, the water channel is not opened, so that no water leakage occurs.

【0007】[0007]

【実施例】中空棒状シャンク20の基端側は開口してい
るが先端側には銅製凸部付部材が液密に嵌合したのち溶
接25されて、凸部22が形成されている。凸部22に
銅製帽状チップ30が固定され、電極棒10が構成され
ている。凹部内面上縁から凹部底面近傍に達する少なく
とも1個の小溝31が設けられている。
EXAMPLE A hollow rod-shaped shank 20 is open at the base end side thereof, but a copper convex member is liquid-tightly fitted on the distal end side thereof and then welded 25 to form a convex portion 22. The copper cap-shaped tip 30 is fixed to the convex portion 22 to form the electrode rod 10. At least one small groove 31 extending from the upper edge of the inner surface of the recess to the vicinity of the bottom surface of the recess is provided.

【0008】シャンク20をホルダー(図示省略)に取
付けたときホルダーから延びる水管41がシャンク20
内を通り凸部22内の内面近傍にまで達している。凸部
22に帽状チップ30の凹部を装脱可能に固定するに当
っては、凸部22に緩いテーパ21が設けられ、帽状チ
ップ30が圧嵌密着されることもあるし、凸部22の外
ネジに帽状チップ30の内ネジが螺着されることもあ
る。
When the shank 20 is attached to a holder (not shown), the water pipe 41 extending from the holder is attached to the shank 20.
It passes through the inside and reaches the vicinity of the inner surface in the convex portion 22. When the concave portion of the cap-shaped tip 30 is removably fixed to the convex portion 22, a loose taper 21 is provided on the convex portion 22 so that the cap-shaped tip 30 may be press-fitted and closely attached. The inner screw of the cap-shaped tip 30 may be screwed onto the outer screw of 22.

【0009】凸部22の外側に潤滑材23を介在させて
帽状チップ30の凹部を装脱可能に固定すると装脱が容
易になる。
If the recessed portion of the cap-shaped tip 30 is detachably fixed by interposing the lubricant 23 on the outer side of the convex portion 22, the detachment is facilitated.

【0010】潤滑材23はカーボンとグリスとを混合し
たような導電性潤滑材が好ましいが、グリス単独でも圧
嵌状態においては部分的にグリス薄層が切れて凸部22
と帽状チップ30とが密接し通電性が保たれている。
The lubricant 23 is preferably an electrically conductive lubricant such as a mixture of carbon and grease, but even with grease alone, the thin grease layer is partially cut off in the press-fitted state, and the convex portion 22 is formed.
The cap-shaped chip 30 and the cap-shaped chip 30 are in close contact with each other, and the electrical conductivity is maintained.

【0011】中空棒状シャンク20に銅製凸部付部材を
液密に嵌合したのち固着するときには溶接以外の固定手
段を用いることも出来る。
A fixing means other than welding may be used when the member with a copper convex portion is fitted in the hollow rod-shaped shank 20 in a liquid-tight manner and then fixed.

【0012】[0012]

【発明の効果】帽状チップ30を交換する際にシャンク
20の中空部24内の水路が外気に連通することがない
ので水洩れを生じることがない。また、帽状チップ30
を凹部32に固定する際に両者間の空間の流動物が小溝
31より外部に洩出するので固定性が向上する。
When the cap-shaped tip 30 is replaced, the water passage in the hollow portion 24 of the shank 20 does not communicate with the outside air, so that water leakage does not occur. Also, the cap-shaped tip 30
Since the fluid in the space between the two is leaked to the outside from the small groove 31 when the is fixed to the recess 32, the fixability is improved.

【0013】なお、本発明は非水路付きのシャンクに適
用してもチップのコスト低減と、チップ交換の容易化に
役立つものである。
Even when the present invention is applied to a shank with a non-water channel, it is useful for reducing the cost of the tip and facilitating the tip replacement.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係るスポット溶接電極の垂直切断正面
図である。
FIG. 1 is a vertical cut front view of a spot welding electrode according to the present invention.

【図2】図1の分解図である。FIG. 2 is an exploded view of FIG.

【図3】図1のA−A切断端面図である。FIG. 3 is a sectional view taken along line AA of FIG.

【図4】従来例におけるスポット溶接電極の垂直切断正
面図である。
FIG. 4 is a vertical cut front view of a spot welding electrode in a conventional example.

【符号の説明】[Explanation of symbols]

10 電極棒 20 シャンク 21 テーパ 22 凸部 23 潤滑材 24 中空部 25 溶接 30 帽状チップ 31 小溝 32 凹部 33 外面 41 水管 42 細孔 51 シャンク 52 貫通孔 53 チップ DESCRIPTION OF SYMBOLS 10 Electrode rod 20 Shank 21 Tapered 22 Convex part 23 Lubricant 24 Hollow part 25 Welding 30 Cap-like tip 31 Small groove 32 Recess 33 Outer surface 41 Water pipe 42 Pore 51 Shank 52 Through hole 53 Tip

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 シャンク(20)先端に凸部(22)を
設け、該凸部(22)外側に帽状チップ(30)の凹部
(32)を装脱可能に固定すると共に該凹部内面上縁か
ら凹部底面近傍に達する小溝(31)を設けてなるスポ
ット溶接用電極。
1. A shank (20) is provided with a projection (22) at the tip thereof, and a recess (32) of a cap-shaped tip (30) is detachably fixed to the outside of the projection (22) and on the inner surface of the recess. An electrode for spot welding provided with a small groove (31) extending from the edge to near the bottom surface of the recess.
JP5145548A 1993-05-20 1993-05-24 Spot welding electrode Expired - Fee Related JP2665578B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP5145548A JP2665578B2 (en) 1993-05-24 1993-05-24 Spot welding electrode
US08/234,356 US5473135A (en) 1993-05-20 1994-04-28 Spot welding electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5145548A JP2665578B2 (en) 1993-05-24 1993-05-24 Spot welding electrode

Publications (2)

Publication Number Publication Date
JPH07108386A true JPH07108386A (en) 1995-04-25
JP2665578B2 JP2665578B2 (en) 1997-10-22

Family

ID=15387730

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5145548A Expired - Fee Related JP2665578B2 (en) 1993-05-20 1993-05-24 Spot welding electrode

Country Status (1)

Country Link
JP (1) JP2665578B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101811221A (en) * 2010-05-14 2010-08-25 奇瑞汽车股份有限公司 Electrode for fixed spot welder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62109885U (en) * 1985-12-27 1987-07-13
JPH01170586A (en) * 1987-12-25 1989-07-05 Honda Motor Co Ltd Electrode for spot welding

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62109885U (en) * 1985-12-27 1987-07-13
JPH01170586A (en) * 1987-12-25 1989-07-05 Honda Motor Co Ltd Electrode for spot welding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101811221A (en) * 2010-05-14 2010-08-25 奇瑞汽车股份有限公司 Electrode for fixed spot welder

Also Published As

Publication number Publication date
JP2665578B2 (en) 1997-10-22

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